Polyhedra Network is building a ZK-powered cross-chain bridge to enhance the connectivity and security of the Polygon network. Polyhedra initially unveiled the zkBridge Mainnet Alpha in April, which introduced support for NFT transfers and messaging across more than ten central Layer 1 and Layer 2 blockchains, including Ethereum, Polygon, Binance Smart Chain, and Cosmos.
The zkBridge platform leverages zkSNARKs to achieve trustlessness by enabling consensus validation across diverse blockchains, thereby promoting interchain data availability. Polyhedra has also implemented deVirgo to improve the bridge further, a distributed proof system incorporating recursive proofs to reduce proof sizes and verification costs significantly.
For complex transactions that require multi-step computations, the main ZK-proof that proves the validity of the entire transaction is broken down into smaller subproofs (recursive proofs), which prove the correctness of each step in the computation. Recursive proofs can be reconstructed into a cohesive main proof that proves the correctness of the whole transaction.
The forthcoming launch of the cross-chain bridge, powered by zero-knowledge technology, marks a pivotal moment in the evolution of decentralized internet infrastructure, promising to redefine the experiences of both users and developers.